摘要
文章运用商用软件Star CCM+对某船用柴油机不同工况下尾气脱硝反应进行了数值模拟,并研究了催化剂厚度、层数对SCR脱硝反应效率的影响。将各工况下NO转化效率的计算值和试验值进行对比,验证了方法的有效性;进而研究了催化剂厚度和层数对NO转化效率的影响。结果表明,NO转化效率随催化剂厚度的增大而增大,但过大的催化剂厚度会对反应釜流场产生较大阻滞作用,合理布置催化剂层数有助于提高NO转化效率。
The numerical simulation of the exhaust gas denitration reaction of a marine diesel engine is carried out by the commercial software Star CCM+,and the effect of catalyst on the SCR denitration reaction efficiency is investigated.The chemical reaction model is verified by comparing the results with the experimental values under different schemes,then the effects of catalyst thickness and layer number on NO conversion efficiency are studied.The results show that the NO conversion efficiency increases with the increasing of the catalyst thickness,whereas an excessively large catalyst thickness would increase the flow resistance of the reaction system.Meanwhile a proper arrangement of catalyst layers is beneficial to improve the NOx conversion efficiency.
作者
黄温赟
黄文超
朱陈程
管延敏
HUANG Wenyun;HUANG Wenchao;ZHU Chencheng;Guan Yanmin(Fishery Machinery and Instrument Research Institute,Chinese Academy of Fishery Science,Key Laboratory of Ocean Fishing Vessel and Equipment,Ministry of Agriculture,Shanghai 200092,China;Joint Research Laboratory for Deep Blue Fishery Engineering Equipment Technology,Pilot National Laboratory for Marine Science and Technology(Qingdao),Shandong 266237,China;College of Naval Architecture and Ocean Engineering,Jiangsu University of Science and Technology,Jiangsu Zhenjiang 212003,China)
出处
《船舶工程》
CSCD
北大核心
2020年第S02期109-114,共6页
Ship Engineering
关键词
SCR脱硝反应
选择性催化还原SCR
柴油机
反应效率
数值研究
SCR denitration reaction
selective catalytic reduction SCR
diesel engine
reaction efficiency
numerical simulation
